Thank you for your question.
There are two problems she needs help with. One is the risk of an unwanted pregnancy for which she should take emergency contraception as soon as she can. This is available as ipill, unwanted 72 etc at the pharmacy. The second risk is of sexually transmitted infections for which she will need to see a doctor specialising in skin and DVD. It will also allow the doctor to counsel her regarding risks of infections like HIV and hepatitis as well as discuss ongoing regular reliable contraception.